Dopamine Shrinks Cancer Tumors in Mice

According to a recent study by researchers at the Technion – Israel Institute of Technology, activation of the brain’s reward system can dramatically reduce tumor size in mouse models of cancer. The activation of the dopaminergic system regulated anti-cancer immunity in these models. After two weeks of treatment, tumors in some models shrank in size by half. This occurred in the absence of any other treatment, suggesting a mechanism whereby the patient’s positive emotions can control disease progression.